发明名称 |
Method and apparatus to protect fixed wireless terminal from foreign voltage at the tip and ring connection |
摘要 |
A method and apparatus for preventing harmful foreign voltage from being applied to a fixed wireless terminal. Upon the detection of a harmful voltage, the fixed wireless terminal is prevented from being connected to the tip-and-ring lines of a premises' land-line. The voltage is detected by a voltage-detector. The invention may also be used to disconnect the normally-closed connection of the fixed wireless terminal with the tip-and-ring lines of the premises' land-line upon the detection of a harmful voltage on the tip-and-ring lines.
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申请公布号 |
US6615056(B1) |
申请公布日期 |
2003.09.02 |
申请号 |
US19990409891 |
申请日期 |
1999.10.01 |
申请人 |
TELULAR CORP. |
发明人 |
TAYLOR ALVIN;GIACOPELLI DANIEL;ENGELKING FRED;SCHORNACK LOUIS |
分类号 |
H04M1/723;H04M1/725;(IPC1-7):H04Q7/20 |
主分类号 |
H04M1/723 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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